- #1
AstonDilla
- 5
- 0
Hello! I'm new to this website, so apologies if I'm a little off with the way I format this question.
Nonetheless:
This last year, I've been researching sound energy and methods of focusing, harvesting, and storing this energy.
Essentially, I'm looking at the possibility of harnessing sound energy by a means of unpowered, and potentially, recycled materials.
The common understanding is that the amount of electrical energy generated by most sound energy harvesting is ridiculously small, and of little to no use.
However, the last few months, I've come across a few interesting reports that show using certain piezoelectric materials, a significant amount of voltage can be generated from a sound source.
For example, a Korean experiment in 2010 showed 50mV AC could be generated from 100Hz at 100dB:
http://spectrum.ieee.org/nanoclast/...owires-enable-energy-generation-through-sound
I know this is a very small amount, but my idea (albeit theoretical) would be to employ this material in an environment like an airport runway (London Heathrow has 1,300 air traffic movements per DAY) where levels reach close to 110dB (which frequencies exactly, are yet to be calculated...)
This energy would then be stored in battery circuit, specific for piezoelectric harvesting, such as the following here:
https://institutes.lanl.gov/ei/pdf_files/JIMSS2005.pdf
Most importantly, I'd be looking to focus a frequency of 100Hz by placing the piezoelectric material (as mentioned above) inside a Parabolic dish, similar to a parabolic dish microphone:
http://www.wildtronics.com/parabolicaccuracy.html#.VSJm5EZwNE4
MY QUESTION:
Does anyone have any advice on focusing lower frequency sound waves? What kind of material and dimensions would I require for this dish?
Does anyone have any advice on the project as a whole? Any major mistakes I'm missing or important things I haven't considered properly?
Any comments at all would be greatly appreciated :)
Nonetheless:
This last year, I've been researching sound energy and methods of focusing, harvesting, and storing this energy.
Essentially, I'm looking at the possibility of harnessing sound energy by a means of unpowered, and potentially, recycled materials.
The common understanding is that the amount of electrical energy generated by most sound energy harvesting is ridiculously small, and of little to no use.
However, the last few months, I've come across a few interesting reports that show using certain piezoelectric materials, a significant amount of voltage can be generated from a sound source.
For example, a Korean experiment in 2010 showed 50mV AC could be generated from 100Hz at 100dB:
http://spectrum.ieee.org/nanoclast/...owires-enable-energy-generation-through-sound
I know this is a very small amount, but my idea (albeit theoretical) would be to employ this material in an environment like an airport runway (London Heathrow has 1,300 air traffic movements per DAY) where levels reach close to 110dB (which frequencies exactly, are yet to be calculated...)
This energy would then be stored in battery circuit, specific for piezoelectric harvesting, such as the following here:
https://institutes.lanl.gov/ei/pdf_files/JIMSS2005.pdf
Most importantly, I'd be looking to focus a frequency of 100Hz by placing the piezoelectric material (as mentioned above) inside a Parabolic dish, similar to a parabolic dish microphone:
http://www.wildtronics.com/parabolicaccuracy.html#.VSJm5EZwNE4
MY QUESTION:
Does anyone have any advice on focusing lower frequency sound waves? What kind of material and dimensions would I require for this dish?
Does anyone have any advice on the project as a whole? Any major mistakes I'm missing or important things I haven't considered properly?
Any comments at all would be greatly appreciated :)